多馈入直流对上海电网稳定性影响的研究

Research on impacts of multi-infeed HVDC on the stability of shanghai power grid

研究了2012年4回高压直流线路同时落点于上海电网负荷中心时,在系统发生严重故障的情况下,交/直流系统的相互作用及对上海电网安全稳定性的影响。同时在N-1扫描的基础上,对导致各个逆变站换相失败的情况进行了分析,为上海电网的安全稳定运行提供了参考和理论计算依据。

In 2012, it is expected that four HVDC lines will terminate in the load center of shanghai power grid simultaneously. The interaction of AC and DC systems, as well as the safety and stability of shanghai power grid when serious failures occur to the AC and DC systems were studied. Based on N-1 scanning result, the cases that commutation failure in converting plants may be caused by AC disturbances were analyzed, providing reference and theoretical calculation for safe and stably operation of shanghai power grid.